145623554 has 16 divisors (see below), whose sum is σ = 230985216. Its totient is φ = 68743200.

The previous prime is 145623553. The next prime is 145623589. The reversal of 145623554 is 455326541.

145623554 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145623553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26102 + ... + 31185.

It is an arithmetic number, because the mean of its divisors is an integer number (14436576).

Almost surely, 2^145623554 is an apocalyptic number.

145623554 is a deficient number, since it is larger than the sum of its proper divisors (85361662).

145623554 is a wasteful number, since it uses less digits than its factorization.

145623554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57361.

The product of its digits is 72000, while the sum is 35.

The square root of 145623554 is about 12067.4584731003. The cubic root of 145623554 is about 526.1107897922.

The spelling of 145623554 in words is "one hundred forty-five million, six hundred twenty-three thousand, five hundred fifty-four".